Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 50: Instrumentierung
HK 50.6: Vortrag
Donnerstag, 20. März 2014, 18:15–18:30, HZ 8
Timing tests of Silicon-Photomultipliers for readout of large plastic scintillators — •Stefan Gohl1,2, Daniel Bemmerer1, Thomas E. Cowan1,2, Klaus Heidel1, Tobias Reinhardt2,1, Marko Röder1,2, Daniel Stach1, Andreas Wagner1, and David Weinberger1 for the R3B collaboration — 1Helmholtz-Zentrum Dresden-Rossendorf (HZDR) — 2TU Dresden
Silicon Photomultipliers (SiPMs) are under study as a possible replacement for timing photomultiplier tubes (PMTs) in the NeuLAND (New Large Area Neutron Detector) detector at FAIR. SiPMs have several advantages over PMTs. They are insensitive to magnetic fields, small and they can be manufactured economically. Therefore, studies have been made with different SiPMs, preamplifiers and scintillators aiming to find a suitable setup with a good timing resolution for NeuLAND. Some parameters, e.g. bias voltage and light input, were tuned as well. The SiPMs were irradiated with an electron beam at ELBE and a picosecond laser system while the signals were recorded with a digital oscilloscope and evaluated by using a software Constant Fraction Discriminator (CFD). Preliminary results will be presented.
Supported by NupNET NEDENSAA (05 P09 CRFN5) and Helmholtz Portfolio Initiative "Detector Technology and Systems".